Charles Walter Bugg, M.D., PH.D.
Emergency Medicine Physician · Pasadena, CA
Charles Walter Bugg, M.D., PH.D. is an emergency medicine physician with a practice address in Pasadena, California, and NPI 1144690777, issued on Sep 25, 2015. Check the license (California A137987, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Charles Walter Bugg
- Credential
- M.D., PH.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A137987 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 W California Blvd, Pasadena, CA 91125
- Phone
- (626) 397-5116
- Enumerated
- Sep 25, 2015
- Record last updated
- Oct 28, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20171024002898); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2014
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Verify Charles Walter Bugg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A137987Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% more Medicare Part D claims than the average emergency medicine physician in 2024
305 Medicare Part D claims for 205 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 22 claims were for opioids.
Most prescribed
- Doxycycline Hyclate34 claims
- Albuterol Sulfate Hfa26 claims
- Amoxicillin-Clavulanate Potass20 claims
- Prednisone20 claims
- Cefdinir17 claims
- Ondansetron Odt15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $187.28
1 payment: food and beverage; the largest payer was Inari Medical, Inc. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Exer Medical CorporationCalabasas, CA
- Hmh Emergency Medical Group, Inc.Pasadena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles Walter Bugg among 7,751 emergency medicine physician records in California
Charles Walter Bugg, M.D., PH.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 72% of them.
- NPI issued2015 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2014 · median 2011 among the 4,560 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Pasadena → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- David Ulick, MDPasadena, CA 911091023019460
- Huma Khan, MDPasadena, CA 911071528367174
- Giancarlo Dimassa, MDPasadena, CA 911061255370797
- Charles Otieno, M.D.Pasadena, CA 911061326097338
- Lawrence Rudd, M.D.Pasadena, CA 911061972629707
- John Bosco, MDPasadena, CA 911051811457732
- Michelle ChoiPasadena, CA 911051992267504
- Victor Lei, MDPasadena, CA 911051477174258
Common questions
What is Charles Walter Bugg, M.D., PH.D.'s NPI number?
Charles Walter Bugg, M.D., PH.D.'s National Provider Identifier (NPI) is 1144690777, issued on Sep 25, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Charles Walter Bugg, M.D., PH.D. located?
The NPPES record lists a practice address at 100 W California Blvd, Pasadena, CA, 91125. Phone: (626) 397-5116. Providers update this record themselves, so call before visiting.
How can I verify Charles Walter Bugg, M.D., PH.D.'s license?
NPPES lists California license number A137987, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Charles Walter Bugg, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Charles Walter Bugg, M.D., PH.D. had 305 Medicare Part D claims for 205 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.